VolumeProperty.interpolation_type

property VolumeProperty.interpolation_type: str

Return or set the interpolation type.

Value must be either 'linear' or 'nearest'.

Examples

Download Python source code | Download Jupyter notebook

Create a sample pyvista.ImageData dataset.

>>> import numpy as np
>>> import pyvista as pv
>>> n = 21
>>> c = -(n - 1) / 2
>>> vol = pv.ImageData(dimensions=(n, n, n), origin=(c, c, c))
>>> scalars = np.linalg.norm(vol.points, axis=1)
>>> scalars *= 255 / scalars.max()
>>> vol['scalars'] = scalars

Demonstrate nearest (default) interpolation.

>>> pl = pv.Plotter()
>>> actor = pl.add_volume(
...     vol,
...     show_scalar_bar=False,
...     opacity=[0.3, 0.0, 0.05, 0.0, 0.0, 0.0, 1.0, 0.0],
...     cmap='plasma',
... )
>>> actor.prop.interpolation_type = 'nearest'
>>> pl.show()

Static Scene

Interactive Scene

Demonstrate linear interpolation.

>>> pl = pv.Plotter()
>>> actor = pl.add_volume(
...     vol,
...     show_scalar_bar=False,
...     opacity=[0.3, 0.0, 0.05, 0.0, 0.0, 0.0, 1.0, 0.0],
...     cmap='plasma',
... )
>>> actor.prop.interpolation_type = 'linear'
>>> pl.show()

Static Scene

Interactive Scene